Freaky angles on Sims?

[Lovely Rita]

After I installed Seasons, my Sims' shoulders got really angley.
like this:

Some are more pronounced, others are just pointy. (some outfits look like they have huge shoulder pads. Huge.)

Today I moved all my downloads and kept only the outfits that used Maxis meshes and tried to see if that would work.
It didn't.

I have all my settings are on high texture detail and smooth edges.

Did this happen to anyone else and does anyone know how to fix it?

I only have 3 hacks/game changing things, Squinge's pregnancy outfit mod, the Insimenator, and CEP, and I have all the updated versions.

EDIT: Also, my Sims look normal in Body Shop and CAS! but once I actually play them they get all angley.

EDIT AGAIN: Forget it, I fixed it; I had to turn square pixels on. I didn't think that would do anything!

[Xylune]

I know this is cliche, but have you downloaded and installed the latest drivers for your video card?  Another thing you could try is uninstalling and reinstalling Seasons.  I had some major problems after installing the patch, and reinstalling fixed them.